干旱区生态环境知识资源中心(Arid): 喀斯特高原山地贵阳市2008-2018年土壤侵蚀时空特征与侵蚀热点变化分析

Arid

	喀斯特高原山地贵阳市2008-2018年土壤侵蚀时空特征与侵蚀热点变化分析
其他题名	Spatial-Temporal Characteristics of Soil Erosion and Erosion Hotspots in Guiyang City of Karst Plateau Mountainous Region in 2008-2018
	王志杰; 柳书俊; 苏嫄
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2020
卷号	34 期号:5
中文摘要	土壤侵蚀/石漠化是喀斯特地区的首要生态问题,是生态文明建设的最大障碍和威胁。研究以典型喀斯特高原山地贵阳市为对象,运用RUSLE模型,采用探索性空间数据分析(ESDA-GIS)的空间自相关和Getis-Ord G_i *冷热点分析方法,评价了贵阳市2008年、2013年和2018年土壤侵蚀状况,揭示了10年间贵阳市土壤侵蚀空间演变规律和侵蚀热点的分布特征,探析了植被覆盖因子和降雨因子对土壤侵蚀变化的影响。结果表明:(1)2008-2018年贵阳市土壤侵蚀状况得到有效控制,平均土壤侵蚀模数从2008年的 819.11t/(km~2·a)降至2018年的70.14t/(km~2·a),现阶段土壤侵蚀强度以微度侵蚀为主,但2013-2018年土壤侵蚀有恶化趋势;(2)贵阳市土壤侵蚀的空间分布与演化具有明显的空间聚集效应,全局Moran's I指数介于0.125~0.280,但聚集趋势呈总体减弱、小幅扩散的特征;侵蚀热点区主要集中分布在清镇市、花溪区、开阳县和修文县等县区,以及海拔1 200~1 300m或坡度8°~15°的区域。(3)植被覆盖因子对贵阳市近10年土壤侵蚀面积变化的贡献约74%~92%,是土壤侵蚀变化的主导和控制因子;而降雨侵蚀力因子的贡献仅约为7.5%~26.0%。研究结果可为新时期贵阳市土壤侵蚀/石漠化综合治理、国土空间优化和生态文明城市建设提供重要的科学依据。
英文摘要	Soil erosion and its induced rocky desertification,as the most serious ecological problem in Karst Plateau,is the biggest obstacle and threat to the construction of ecological civilization.In this study,taking a typical karst plateau mountainous City,i.e.Guiyang City,as the object,using RUSLE model,adopting the global and local spatial autocorrelation,and Getis-Ord G_i * methods based on Exploratory Spatial Data Analysis(ESDA-GIS),the soil erosion of Guiyang City in 2008,2013,and 2018was assessed.The spatialtemporal distribution and changes were analyzed,and the impact of vegetation coverage factor and rainfall factor on the change of soil erosion was revealed.The results showed that:(1)The soil erosion of Guiyang City was effectively controlled from 2008to 2018,and the average soil erosion modulus decreased from 819.11t/(km~2·a)in 2008to 70.14t/(km~2·a)in 2018.The soil erosion intensity was mainly slight erosion at present,showing a deterioration trend in 2013-2018.(2)The spatial distribution and evolution of soil erosion in Guiyang City displayed an obvious spatial aggregation effect.The Global Moran's I index ranged from 0.125to 0.280,but the aggregation trend was characterized byoverall weakening and small diffusion.The erosion hotspots was mainly distributed in Qingzhen City,Huaxi District,Kaiyang County and Xiuwen County,as well as areas with an altitude of 1 200~1 300mor a slope of 8°~15°.(3)The contribution of vegetation cover factor to the changes of soil erosion area was about 74%~92%,which was the leading and controlling factor of soil erosion,while the contribution of rainfall erosivity factor was only about 7.5%~ 26.0%.This research could provide the important scientific basis for the comprehensive control of soil erosion and rock desertification,the optimization of land space,and the construction of ecological civilization city in the Karst region.
中文关键词	RUSLE模型 ; 土壤侵蚀热点 ; 探索性空间数据分析 ; 喀斯特高原山地 ; 贵阳市
英文关键词	RUSLE model erosion hotspots exploratory spatial data analysis(ESDA-GIS) karst plateau mountainous region Guiyang City
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6822516
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353862
作者单位	王志杰, 贵州大学生命科学学院;;山地生态与农业生物工程协同创新中心, ;;山地生态与农业生物工程协同创新中心, 贵阳;;贵阳, ;; 550025;;550025. 柳书俊, 贵州大学茶学院, 贵阳, 贵州 550025, 中国. 苏嫄, 贵州大学林学院, 贵阳, 贵州 550025, 中国.
推荐引用方式 GB/T 7714	王志杰,柳书俊,苏嫄. 喀斯特高原山地贵阳市2008-2018年土壤侵蚀时空特征与侵蚀热点变化分析[J],2020,34(5).
APA	王志杰,柳书俊,&苏嫄.(2020).喀斯特高原山地贵阳市2008-2018年土壤侵蚀时空特征与侵蚀热点变化分析.水土保持学报,34(5).
MLA	王志杰,et al."喀斯特高原山地贵阳市2008-2018年土壤侵蚀时空特征与侵蚀热点变化分析".水土保持学报 34.5(2020).